Formal:
* Magal: This is the most common and formal term for "daughter."
* Pillai: This term is slightly less formal than "Magal" but still used in respectful settings.
Informal:
* Ponnu: This is a more affectionate and informal term for "daughter" and is often used by parents and close family members.
* Kutty: This is a very informal term for "daughter" and is usually used for young daughters.
* Paappa: This is a very affectionate and endearing term for "daughter" and is often used by grandparents and other close family members.
Other terms:
* Kannu: This term literally means "eye" but is often used as a term of endearment for a daughter.
* Manasu: This term literally means "heart" but is often used to express the love and affection a parent has for their daughter.
Ultimately, the best term to use depends on the specific context and relationship between the speaker and the daughter.